Ghost of Tsushima weapons

Arrows

First shown: The Tale of Sensei Ishikawa

Black Powder Bomb

First shown: Unlocked with a Legend rank-up

Blowgun

First shown: Ghosts from the Past

Firecracker

First shown: Wind Chime technique (1 Technique Point)

Half Bow

First shown: The Tale of Sensei Ishikawa

Kunai

First shown: Legend rank: The Wandering Samurai

Longbow

First shown: The Curse of Uchitsune

Sakai Katana

The Sakai Katana is Jin's main sword and the Sakai clan heirloom he carries all game. It is your only real melee weapon besides the tanto, so upgrading it at a Swordsmith is the main way to raise your sword damage.

Sakai Tanto

First shown: Assassination unlocked in The Warrior's Code

Smoke Bomb

First shown: Unlocked with a Legend rank-up

Sticky Bomb

First shown: Unlocked with a Legend rank-up

Wind Chime

First shown: Unlocked with a Legend rank-up